Series: Apocalypse
| Model | DB-3515R D2 / DB-3515R D1 |
| Type | Subwoofer |
| Size | 15 inch |
| Voice coil size | 3.50 inch |
| Cone | Carbon |
| Magnet | Ferrite |
| Voice coil wire | None |
| Surround | Foam |
| RMS Power | 3500 W |
| MAX Power | 7000 W |
| Frame | Alu |
| Impedance | 2+2 / 1+1 Ohm |
| SPL | 87.50 / 87.30 dB |
| Fs | 32.30 / 32.00 Hz |
| Qts | 0.39 / 0.38 |
| BL | 27.20 / 23.90 |
| Vas | 69.00 / 68.30 L |
| Xmeh | 45.00 / 45.00 mm |
| Xmax | 22.50 / 22.50 mm |
| Mounting depth | 10.96 inch (278.5 mm) |
| Cut-out dimension | 13.98 inch (355.0 mm) |
| Gross weight | 87.30 lb (39.60 kg) |
